Gravity's extra pull changes its fundamental strength depending on how far away you are from the center of a galaxy.
April 29, 2026
Original Paper
Scale-dependent gravitational enhancement across galaxies, clusters, and strong lenses
SSRN · 6662836
The Takeaway
Dark matter was invented to explain why galaxies have more gravity than they should, but the math was always assumed to be a universal constant. This study shows that the ratio of this extra gravity actually changes its behavior once you look at objects larger than 100 kiloparsecs. The pull follows different mathematical rules in small galaxies versus giant galaxy clusters. This suggests that what we call dark matter might actually be a misunderstanding of how gravity works at different scales. It could lead to a total rewrite of the laws of physics that govern the largest structures in the universe.
From the abstract
We present a cross-scale empirical analysis of gravitational enhancement across three independent astrophysical regimes: 175 disk galaxies from the SPARC database, 1743 galaxy clusters from the MCXC meta-catalogue, and 177 cluster-scale strong-lensing systems from the COOL-LAMPS survey. For each system, we evaluate the ratio of observed to baryonic Newtonian acceleration at a characteristic physical radius and examine its scaling with baryonic acceleration . By comparing systems at partially ove